Shaft-coupling.



N0. 676,|94. Patented lune ll, I91.

I. LEHMAN. SHAFT COUPLING.

(Application filed Apr. 15, 1901.)

(No Model.)

w z xi IN VENTOI? A HORNE);

w: uonms mans w. wom-Ln'va. msmunin. n. c,

UNITED STATES PATENT OFFICE.

ISADOR LEHMAN, OF CLEVELAND, OHIO.

SHAFT-COUPLING.

SPECIFICATION forming part of Letters iPatent No. 676,194, dated June 11, 1901.

Application filed April15,1901. Serial No 55,953. (No model.)

T0 at whom it may concert-t.

Be it known that I,- ISADOR LEHMAN, a resident of Cleveland, in the county of Ouyahoga and State of Ohio, have invented certain new and useful Improvements in Shaft-Couplings; and I do hereby declare the following to be a full, clear, and exact description of the inven:

tion, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to improvements in shaft-couplings suitable for use in coupling together two shaft-sections without interfering with the rotation of the said shaft-sections in unison and accommodating their arrangement at an angle to each other.

The object of this invention is to provide a shaft coupling of the character indicated which is simple, compact, and durable in construction and reliable in its operation, and whose parts are conveniently assembled and separated.

With this object in view and to'the end of realizing other advantages hereinafter appearing the invention consists in certain features of construction and. combinations of parts hereinafter described, and pointed out in' the claims.

In the accompanying drawings, Figure I'is a side elevation of a shaft-coupling embodying my invention. Fig. II is a view relative to Fig. I, mainly in horizontal section on line II II, Fig. I. Fig. III is a view relative to Fig. II, mainly in horizontal section on line III III, Fig. II. 'Fig. IV is an endelevation of a ring or sleeve instrumental in holding together the halves or sections of the casing or shell into which extend thea'djacent ends of the two shaft-sections coupled together by my improved coupling. Fig. V is a side View of either one of the shaft-sections participating in the formation of the coupling. Fig. VI is an inner side View of one of the halves or sections ofthe casing or. shell containing the adjacent ends of the two shaft-sections. Fig. VII is an end elevation of either one of the shaft-sections looking at the head-forming end, which participates int-he formation of the coupling.

Referring to the drawings, a and b designate two shaft-sections coupled together by a shaft-coupling embodying my invention.

The shaft-sections a and b are provided at I their adjacent ends, respectively, with a head l5,which participates in the formation of the coupling.

My improved coupling comprises a shell or casing 0, into which extend the adjacent or head-forming ends of the two shaft-sections. The casing or shell 0 is suitably chambered to receive the said heads 15 of the shaft-sections, and the chamber of the shell 0 has two walls 20 and 21, arranged in planes at right angles to each other and extending concen= trically of the center of the said shell: The shell 0 is slotted, as at 22, longitudinally of each of the said walls 20 and 21 centrally between the ends of the walls. The Shitfli-SGGf tion (it extends through the slot 22 in the wall 20 and the shaft-section 1) extends through the slot 22 inthe wall 21, and each of the shaft-sections has its head 15 provided with a I shoulder 16,en gaging the slotted wall through whichthe said shaft-section extends, which shoulder 16 extends widthwise of the said wall the full width of the wall, and the slot 22 in the said wall-is narrower than and formed centrally widthwise of the wall, and consequentl y the shell 0 has bearing upon the shoulders 16 of the heads 15 of the shaft-sections at opposite sides of the slots 22. The head 15 of each shaft-section, contiguous-to the head l5of the other shaft-section, has an edge 17 arranged at right angles to the axial line of the sha'fts'ection and arranged, consequently, radially of the shellc, and-the sides of the said head converge, as at 18, toward the said edge. The head of each shaft-section has, therefore, a hearing at its edge 17- against the edge 17 of the head of the other shaft-section, and the said edges are at right angles to each other when the two shaft-sections are arranged in line.

The shoulder 16 of the head of each shaft section extends, preferably, somewhat less than half-way around the center of the shell c,and the slot 22,through which the said shaftsection extends, extends a distance circumferentially of the shell 0 somewhat less than the said shoulder 16, whereas the slotted wall (20 or 21, as the case may be) engaged by the said shoulder extends about three-fourths of the-distance around the center of the shell 0, and, in fact, each of the slotted walls 20 and 21 extends from a point near one side of the other slotted wall concentrically of the center of the shell to near the opposite .side of the last-mentioned slotted wall. The portions of the walls and 21 at the sides of the slots 22 have adequate hearing at all times upon the-shoulders 16 of the heads 15 of the shaft-sections and are instrumental in preventing displacement of the parts. i

The shell 0 is provided internally at each side of each slotted wall of the said shell with a shoulder 19, extending along the said wall,

and the two shoulders 19 and 19, extending along the said wall, are of course arranged at and a short distance from opposite sides, respectively, of the slot 22 in the said wall at and contiguous to opposite sides, respectively, of the head 15 of the shaft-section extending through the said slot and prevent displacement of the said shaft-section laterally of the said wall, and consequently establishing operative connection between the shellc and the said shaft-section.

- Obviously by the construction hereinbefore described the two shaft-sections and the shaft-connecting shell or casing 0 will rotate in unison upon applying power to one of the said shaft-sections, and each shaft-section can be arranged at an angle to the other shaft-section, as shown in dotted lines, Figs. II and III, and that when the said shaft-sections areal-ranged at an angle to each other the shell 0 will during the operation of the parts not only, rotate, but rock or oscillate upon the shoulders 16 of the heads 15 of the shaftvsectious.

The convergence of the sides of the head 15 of each shaftsection toward the edge 1 7 of the said head is, obviously, essential to accommodate an angular arrangement of the two shaft-sections relative to each other.

The shell 0 is preferably divided, as at 25, into halves or sections centrally and longitudinally of one of the slots 22 of the said shell to accommodate the assemblage of the parts, and the said halves or sections are each provided externally with screw-threads 26, en-

, gaged by the corresponding threads of an intennally-screw-threaded ring or sleeve 6, embracing the said halves or sections and securing the latter in their assembled position, and the ring eis prevented from unscrewing from the halves or sections of the shell 0 by mental in effecting a distribution of the oil or lubricantvsupplied to the chamber of the shell 0 to the ditferent parts of the coupling, especially when the shaft-sections are arranged at an angle to each other, so as to result in an oscillation as well as rotation of the said shell upon the heads of the shaftsection.

What I claim is 1. The combination, of a casing or shell 0 der 16 extending along and aifording bearing for the wall through which the respective shaft-section extends, and the head of each shaft-section having an edge engaging and afiording bearing to the corresponding edge of the'other shaft-section, substantially as set forth.

2. The combination, of a casing or shell 0 having two internal walls 20 and 21 arranged in different planes, respectively, at right angles to each other and extending partially around the center of the said shell, which shell is provided, in each of the said walls, with a slot 22 extending along the wall centrally between the ends of the wall; means for holding the sections of the shell or casing together, and two shaft-sections extending through the slot 22 in the different aforesaid walls, respectively,and provided, respectively, with a head 15 contained within the aforesaid shell, and

a shoulder 16 extending along and affording bearing for the wallthrough which the respective shaft-section extends, and the head of each shaft-section having an edge 17 arranged radially of the shell and engaging and afiording bearing to the corresponding edge of the other shaft-section, and the head of each shaft-section having its sides converging, as at 18, toward its said edge, substantially as shown, for the purpose specified.

3. The combihatiomof a casing or shell having two internal walls 20 and 21 arranged in different planes, respectively, at right angles to each other and extending partially around the center of the said shell, which shell is pro* vided, in each of the said walls, with a slot 22 extending along the wall, and has two internal shoulders 19' and 19 extending along each of the said walls at opposite sides, respectively, of the slot in the wall; means for holding the'sections of the shell or casing together, and two shaft sections extending through the slot 22 in the different aforesaid walls, respectively,an d provided,respectively, with a head 15 contained within the aforesaid shell between the shoulders at the sides of the wall through which the respective shaft-section extends, and a shoulder 16 extending along and affording bearing for the said lastmentioned wal1,and the head of each shaftsection having an edge engaging and afiording bearing to the corresponding edge of the other shaft-section, substantially as set forth.

4. The combination,of a casing or shell having two internal walls 20 and 21 arranged in different planes, respectively, at right angles to each other and extending partially around the center of the said shell, which shell is provided, centrally widthwise of each of the said walls, with a slot 22 extending along the wall centrally between the ends of the wall, and has two internal shoulders 19 and 19 extending along each of the said walls at opposite sides, respectively, of the slot in the wall; means for holding the sections of the shell or casing together, and two shaft-sections extending through the slot 22 in the different aforesaid walls, respectively, and provided, respectively, with a head 15 contained within the aforesaid shell between the shoulders at the sides of the wall through which the respective shaft-section extends, and a shoulder 16 extending along and a'ifordingbearing for the last-mentioned wall, substantially as and for the purpose set forth.

5. The combination, of a casing or shell having two internal walls 20 and 21 arranged in different planes, respectively, at right angles to each other and ext-ending partially around the center of the said shell, which shell is provided, centrally widthwise of each of the said walls, with a slot 22 extending along the wall centrally between the ends of the wall, and has internal shoulders 19 and 19 extending along each of the said wallsat opposite sides, respectively, of the slot in the wall; means for holding the sections of the shell or casing together; two shaft-sections extending through the slot 22 in the different aforesaid walls, respectively, and provided, respectively, with a head 15 contained within the aforesaid shell between the shoulders 19 and 19 at the sides of the wall through which the respective shaftsection extends, and a shoulder 16 extending along and affording bearing for the said lastmentioned wall, and the head of each shaftsection having an edge 17 arranged at right angles to the axial line of the shaft-section and radially of the aforesaid shell and engaging and affording bearing to the correspondin g edge of the other shaft-section, and the head of each shaft-section also having its sides converging, as at 18, toward its aforesaid edge 17, substantially as shown, for the purpose specified.

6. The combination,with two shaft-sections a and 6 having their adjacent ends provided with heads 15, of a casing or shell 0 embracing and having bearing upon the said heads and establishing operative connection between the said shaft-sections and composed of two externally-screw-threaded halves or sections, and a correspondingly internally threaded ring or sleeve e screwed onto the aforesaid shell-sections, substantially as and for the purpose set forth. a

7. The combination,with two shaft-sections a and I) having their adjacent ends provided with heads, of a casing or shell embracing and having bearing upon the said heads and establishing operative connection between the said shaft-sections and composed of two externally-screw-threaded halves or sections provided, respectively, with a mutually-engaging pin or projection 29 and a hole or recess 30, a correspondingly internally threaded ring or sleeve 6 screwed onto the aforesaid shell-sections,andascrewfextending through the said sleeve into the aforesaid shell, substantially as and for the purpose set forth.

Signed by me at Cleveland, Ohio, this 13th day of April, 1901.

ISADOR LEHMAN.

Witnesses:

O. H. DORER, A. H. PARRATT. 

